improve wind tubine blades by adding a painted rough surface on windword side;
rough only in one direction like sharks skin; you achieve this by using tiny nano aluminium tubes layered in the paint structure;
this can also be achieved by spraying with aluminium on light plastic nano tube particles and subject to high value large surface area magnetic field to obtain a nearly straight uniform magnetic field; thus lining up nano particles in one specific direction similar to the surface of sharks skin;
note aluminium is magnetic in applied high value powerful magnetic fields fact;
the wieght and air drag is almost nothing and the torque/lift energy gained is reasonable and worthwhile, great for prop aircraft and helicopters and ship screw propellors etc and importantly aircraft surfaces ie wings and fuselage and road vehicles; note less noise because better air flow less turbulents etc
andrewlangham@yahoo.co.uk